Locomotive-tender.



@m M i No. 870,840. PATENTBD NOV. 12, 1907. M. E PBTTY.

LOGOMOTIVB TENDER.

APPLICATION rum: APB.24,1907.

2 SHEETS-SHEET 1.

fizz Paid v UNITED STATLLS MILTON E. PETTY, OF CHICAGO, ILLINOIS.

LOCOMOTIVE-TENDER.

Specification of Letters'Patent.

Patented Nov. 12, 1907.

Application filed April 24, 1907. Serial No. 370,033-

To all whom it may concern:

Be it known that I, MILTON E. PE'r'rY, a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Locomotive Tenders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to locomotive tenders and has for its object to provide a mechanism located within the tender for moving the coal contained therein forwardly so as to be at all times within the reach of a lireman of a locomotive.

Under the present methods of firing, it is necessary when the coal supply is low, for the fireman to carry the coal the full length of the tender and this necessitatesan opening and closing of the fire box doors as each shovel of coal is thrown into the [ire box.

In carrying out my invention I employ a follower which has Width substantially equal to the width of the coal pit of the tender and arranged rcai'wardly of the follower is a stem cylinder in which a piston is movable, the piston being connected with the follower. A supply pipe leads to each end of the cylinder for the purpose of admitting steam to either end thereof and these two steam supply pipes form a junction with the main steam supply pipe at the forward'end of the tender and one side thereof, there being a throttle valve interposed at the junction of the three pipes and the valve being of such construction that steam may be admitted to either one of the supply pipes for the cylinder at the will of the fireman.

In the accompanying drawings, Figure I is a top plan view of a tender showing the application of my invention, Fig. 2 is a vertical longitudinal view through the tender, Fig. .3 is a front elevation of the tender, and, Fig. 4 is. a vertical transverse sectional view through the tender taken rearwardly of the follower.

In the drawings there is shown a locomotive tender comprising sides 5, a closed rear end 6, and an open front end 7.

A follower comprises a back plate 8 of steel or other suitable metal and the back plate 8 of the followerhas its upper end turned rearwardly in an inclined plane as indicatedat l0.

Secured at its rear end to the inner face of the rear end wall 6 of the tender is a cylinder 11 which is pro vided at its rear end with a port 12 and at its forward end with a port 13, there being a steam supply pipe 15 in communication with the port 12 and a similar pipe 16 in communication with the port 13. These steam supply pipes extend upwardly beyond the front end of the cylinder and in a plane with the upper edge of the tender at one side thereof they are extended forwardly and at the extreme forward end of the said side of the tender form a junction with a main steam supply pipe 17, there being a three-way throttle valve interposed in the junction of the three pipes. It will be understood of course that steam is supplied to the main supply pipe 17 from the engine by means of the usual flexible couplings (not shown) and that the throttle valve may be moved by the fireman of the locomotive to admit steam into either one of the pipes 15 and 16 for a purpose to be presently explained.

A piston 19 is slidably received in the cylinder 11 and the piston rod which is indicated by the numeral 20 is passed through a stalling box 21 at the forward end of the cylinder 11 and seats in a thrust bearing 22 arranged centrally upon the rear face of the back plate 8.

From the foregoing description of my invention and from the drawings it will be observed that when steam is admitted through the pipe 15 into the cylinder 11, supposing the piston 19 to be at the rearward limit of its movement in the cylinder, the piston will be forced forwardly and will feed the follower in a corresponding direction. On the other hand, when the coal pit of the tender has become emptied, and it is desired to fill the same with coal, steam is admitted through the pipe 16 to cause the piston to move reaiwardly'and draw the follower in a corresponding direction.

As shown in the drawings, the follower is fOldllOCl of a pair of sections which are hinged as at 22, the upper section being the one to which the piston rod is connected and the lower section being free to swing in a forward direction so as to prevent lumps of coal lodging in rear of the follower it being understood that during rearward movement of the follower the lower section will ride over such lumps of coal which may be in the way and that this section will be rigid while the follower is being moved forwardly.

While I have described a steam motor for moving the follower it will be understood of course that any other type of motor may be used if found expedient.

What is claimed is-- 1. The combination with a tender, of a follower-arranged for sliding movement in the coal pit of the tender, :1 cylinder arranged within the tender rearwardly of the follower, a piston arranged for movement in the cylinder and having its rod connected with the follower whereby the follower will be moved with the piston, steam supply pipes leading to each end of the cylinder, a steam main forming a junction with the two pipes, and a valve arranged at the junction of the pipes and designed for operation to admit steam into either of the steam supply pipes.

:3. The combination with a tender, of a follower arranged for sliding movement in the coal pit of the tender, the follower comprising a back plate and facing boards secured upon the front face of the back plate, a cylinder arranged within the tender rearwardly of the follower, a piston arranged for movement in the cylinder, the rod of the piston being connected with the follower whereby the follower will be moved with the piston, steam supply pipes leading to each end of the cylinder, a steam main forming a junction with the two pipes, and a valve arranged at the junction of the pipes and designed for operation to admit steam into either of the steam supply pipes.

The combination with a tender, of a follower formed of hinged sections one of which is free to swing forwardly, said follower being arranged for sliding movement in the coal pit of the tender, the follower comprising a back .plate and facing boards secured upon the front face of the back plate, a cylinder arranged Within the tender rear wardly of the follower, a piston arranged for movement in the cylinder, the rod of the piston being connected with the follower whereby the follower will be moved with the piston, steam supply pipes leading to each end of the cylinder, a steam main forming a junction with the two pipes, and a valve arranged at the junction of the pipes and designed for operation to admit steam into either of the steam supply pipes.

In testimony whereof, I affix my signature, in presence of two witnesses.

MILTON E. PETTY.

Witnesses L. O. CLINTON, F. L. TUTTLE. 

